Well, the jury is out. My wife said he had been floating in the tank for about a week. I hadn't been around due to work. For lack of a better term he goes for rides for hours in the current while crawled up. I thought he was doing the same but hadn't attached anywhere all day so I presumed he was dead. Was kind of half in and out of his shell. I went to pick him up and he curled up so not officially dead, but not behaving "normally". He barely fits in his shell. We will stick things out

Well, we didn't pass the sniff test. He attached to the tank and ate a little, then floated for a long time, then attached again, sank to the bottom for 24 hours. All in all, took a couple of days. Pulled him out and he was funky. I never thought I would watch a snail go through his death throes. I also would have never guess I would notice a major change in "snail activity". Guess I pay more attention to my tank than I thought.

Water parameters were fine pH 8, ammonia 0, nitrites 0, nitrates 10. All stable. No matter what I do he pH is alkalotic but the fish seem to have adjusted.